60 lines
2.0 KiB
Ruby
60 lines
2.0 KiB
Ruby
require 'concurrent/future'
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require 'concurrent/timer_task'
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require 'concurrent/utilities'
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class DockerContainerPool
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@containers = ThreadSafe::Hash[ExecutionEnvironment.all.map { |execution_environment| [execution_environment.id, ThreadSafe::Array.new] }]
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def self.clean_up
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@refill_task.try(:shutdown)
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@containers.values.each do |containers|
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DockerClient.destroy_container(containers.shift) until containers.empty?
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end
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end
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def self.config
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@config ||= CodeOcean::Config.new(:docker).read(erb: true)[:pool]
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end
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def self.create_container(execution_environment)
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DockerClient.create_container(execution_environment)
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end
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def self.return_container(container, execution_environment)
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#container.start()
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@containers[execution_environment.id].push(container)
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end
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def self.get_container(execution_environment)
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if config[:active]
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@containers[execution_environment.id].try(:shift) || create_container(execution_environment)
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else
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create_container(execution_environment)
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end
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end
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def self.quantities
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@containers.map { |key, value| [key, value.length] }.to_h
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end
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def self.refill
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ExecutionEnvironment.where('pool_size > 0').each do |execution_environment|
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if config[:refill][:async]
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Concurrent::Future.execute { refill_for_execution_environment(execution_environment) }
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else
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refill_for_execution_environment(execution_environment)
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end
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end
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end
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def self.refill_for_execution_environment(execution_environment)
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refill_count = [execution_environment.pool_size - @containers[execution_environment.id].length, config[:refill][:batch_size]].min
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@containers[execution_environment.id] += refill_count.times.map { create_container(execution_environment) }
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end
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def self.start_refill_task
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@refill_task = Concurrent::TimerTask.new(execution_interval: config[:refill][:interval], run_now: false, timeout_interval: config[:refill][:timeout]) { refill }
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@refill_task.execute
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end
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end
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